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    COMBUSTION CHAMBER STRUCTURE FOR ENGINE
    2.
    发明申请
    COMBUSTION CHAMBER STRUCTURE FOR ENGINE 审中-公开
    发动机燃烧室结构

    公开(公告)号：US20160201551A1

    公开(公告)日：2016-07-14

    申请号：US14980243

    申请日：2015-12-28

    Applicant: Mazda Motor Corporation

    Inventor： Kenji Uchida ,  Tatsuya Fujikawa ,  Masahisa Yamakawa ,  Daisuke Asaji ,  Kazuhiro Nagatsu ,  Takashi Kaminaga ,  Toru Miyamoto ,  Takashi Youso ,  Hiroaki Abe

    IPC: F02B23/10 ,  F02F1/42 ,  F02F3/28

    CPC classification number: F02B23/101 ,  F02B2023/085 ,  F02B2023/102 ,  F02B2275/40 ,  F02F1/4214 ,  F02F3/28 ,  Y02T10/125

    Abstract: A combustion chamber structure for an engine is provided. The structure includes a piston formed with a downward dented cavity in a central part of an upper surface thereof, and a cylinder head forming a combustion chamber having a pent-roof shape. The upper surface of the piston has an annular part extending from an outer edge of the cavity to an outer edge of the upper surface, and surrounding the outer edge of the cavity. The annular part is formed with first and second piston upper surface portions. When the piston is at a top dead center, a ratio of a volume of a space formed between the first piston upper surface portion and a bottom surface of the cylinder head with respect to a volume of a space formed between the second piston upper surface portion and the bottom surface becomes below a predetermined value.

    Abstract translation: 提供了一种用于发动机的燃烧室结构。 该结构包括在其上表面的中心部分形成有向下凹陷腔的活塞和形成具有顶顶形状的燃烧室的气缸盖。 活塞的上表面具有从空腔的外边缘延伸到上表面的外边缘并围绕空腔的外边缘的环形部分。 环形部分形成有第一和第二活塞上表面部分。 当活塞处于上止点时，形成在第一活塞上表面部分和气缸盖底面之间的空间的体积相对于形成在第二活塞上表面部分 并且底面变得低于预定值。

    Combustion chamber structure for engine
    3.
    发明授权
    Combustion chamber structure for engine 有权
    发动机燃烧室结构

    公开(公告)号：US09267421B2

    公开(公告)日：2016-02-23

    申请号：US14345640

    申请日：2013-08-12

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Tadatomo Toda ,  Mitsunori Wasada ,  Tadasu Hashiguchi ,  Takashi Youso ,  Kazuhiro Nagatsu

    IPC: F02B23/02 ,  F02F3/24 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02F1/22 ,  F02F3/28

    CPC classification number: F02B23/02 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02B23/101 ,  F02B2023/085 ,  F02B2023/102 ,  F02F1/22 ,  F02F3/24 ,  F02F3/28 ,  Y02T10/12 ,  Y02T10/125

    Abstract: The axial line of an intake valve is inclined, and a gap between a piston crown surface and a valve head of the intake valve expands in accordance with the approach of the crankshaft axis. A relationship of G2>G1 is fulfilled, where G1 stands for a minimum gap between the lower surface of the cylinder head that is positioned between the intake valve and the exhaust valve facing the intake valve, with the crankshaft axis being interposed therebetween, and the piston crown surface in a top dead center, and G2 stands for a gap at a position that is the closest to the crankshaft axis, from among the gaps between the lower surface of the valve head of the intake valve and the piston crown surface at a center timing of a valve overlap period in which the intake valve and the exhaust valve are both open.

    Abstract translation: 进气门的轴线倾斜，并且进气门的活塞冠面和阀头之间的间隙根据曲轴轴线的接近而膨胀。 满足G2> G1的关系，其中G1表示位于进气门和排气阀之间的面对进气门的气缸盖的下表面之间的最小间隙，曲轴轴线介于两者之间， 活塞冠表面位于上止点，G2表示在最接近曲轴轴线的位置处的间隙，在进气门的阀头的下表面与活塞冠表面之间的间隙中 进气门和排气门都打开的阀重叠时段的中心定时。

    Controller of laser ignition engine
    4.
    发明授权
    Controller of laser ignition engine 有权

    公开(公告)号：US10041464B2

    公开(公告)日：2018-08-07

    申请号：US15322078

    申请日：2015-06-24

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Takashi Youso ,  Masahisa Yamakawa ,  Tatsuya Fujikawa ,  Atsushi Inoue

    IPC: F02P23/04 ,  F23Q13/00 ,  F02C7/264

    Abstract: A controller of a laser ignition engine configured to perform ignition by using a laser ignition device configured to emit a laser beam condensed by a lens includes: a combustion state related value acquiring portion configured to acquire a combustion state related value related to a combustion state of the engine; and a contamination determining portion configured to compare the combustion state related value acquired by the combustion state related value acquiring portion with a combustion state determining value to determine whether or not the laser ignition device is contaminated, the combustion state determining value being defined based on the combustion state of the engine when the laser ignition device is not contaminated.

    COMBUSTION CHAMBER STRUCTURE FOR ENGINE
    6.
    发明申请
    COMBUSTION CHAMBER STRUCTURE FOR ENGINE 有权
    发动机燃烧室结构

    公开(公告)号：US20150167536A1

    公开(公告)日：2015-06-18

    申请号：US14345640

    申请日：2013-08-12

    Applicant: MAZDA MOTOR CORPORATION

    Inventor： Tadatomo Toda ,  Mitsunori Wasada ,  Tadasu Hashiguchi ,  Takashi Youso ,  Kazuhiro Nagatsu

    IPC: F02B23/02 ,  F02F3/24 ,  F02F1/22

    CPC classification number: F02B23/02 ,  F02B11/00 ,  F02B23/08 ,  F02B23/10 ,  F02B23/101 ,  F02B2023/085 ,  F02B2023/102 ,  F02F1/22 ,  F02F3/24 ,  F02F3/28 ,  Y02T10/12 ,  Y02T10/125

    Abstract: The axial line of an intake valve is inclined, and a gap between a piston crown surface and a valve head of the intake valve expands in accordance with the approach of the crankshaft axis. A relationship of G2>G1 is fulfilled, where G1 stands for a minimum gap between the lower surface of the cylinder head that is positioned between the intake valve and the exhaust valve facing the intake valve, with the crankshaft axis being interposed therebetween, and the piston crown surface in a top dead center, and G2 stands for a gap at a position that is the closest to the crankshaft axis, from among the gaps between the lower surface of the valve head of the intake valve and the piston crown surface at a center timing of a valve overlap period in which the intake valve and the exhaust valve are both open.

    Abstract translation: 进气门的轴线倾斜，并且进气门的活塞冠面和阀头之间的间隙根据曲轴轴线的接近而膨胀。 满足G2> G1的关系，其中G1表示位于进气门和排气阀之间的面对进气门的气缸盖的下表面之间的最小间隙，曲轴轴线介于两者之间， 活塞冠表面位于上止点，G2表示在最接近曲轴轴线的位置处的间隙，在进气门的阀头的下表面与活塞冠表面之间的间隙中 进气门和排气门都打开的阀重叠时段的中心定时。

    SPARK-IGNITION DIRECT INJECTION ENGINE
    8.
    发明申请
    SPARK-IGNITION DIRECT INJECTION ENGINE 有权
    火花点火直喷式发动机

    公开(公告)号：US20140060490A1

    公开(公告)日：2014-03-06

    申请号：US13954895

    申请日：2013-07-30

    Applicant: Mazda Motor Corporation

    Inventor： Kouhei Iwai ,  Masahisa Yamakawa ,  Kazuhiro Nagatsu ,  Takashi Youso ,  Keiji Araki

    IPC: F02D41/30

    CPC classification number: F02D41/30 ,  F02D37/02 ,  F02D41/0025 ,  F02D41/3029 ,  F02D41/3836 ,  F02D2041/389 ,  F02D2200/0611 ,  F02D2200/101 ,  F02P5/1502 ,  F02P5/152 ,  F02P5/1527 ,  Y02T10/46

    Abstract: A spark-ignition direct injection engine is provided. The engine includes an engine body, a fuel injection valve, a fuel pressure setting mechanism, an ignition plug, and a controller. Within a low engine speed operating range of a predetermined high engine load range, the fuel pressure setting mechanism sets a fuel pressure to 30 MPa or above, the fuel injection valve injects fuel between late stage of compression stroke and early stage of expansion stroke, and the ignition plug performs spark-ignition after the fuel injection completes. Within a high engine speed operating range of the high engine load range, the fuel injection valve injects fuel between intake stroke to mid-stage of compression stroke, and the ignition plug performs the spark-ignition. The ignition timing is changed according to an octane number, the changing width of the ignition timing is shorter within the low engine speed range than the high engine speed range.

    Abstract translation: 提供火花点火直喷发动机。 发动机包括发动机主体，燃料喷射阀，燃料压力设定机构，火花塞和控制器。 在预定的高发动机负载范围的低发动机转速工作范围内，燃料压力设定机构将燃料压力设定为30MPa以上，燃料喷射阀在压缩冲程的后期阶段和膨胀冲程的早期阶段之间喷射燃料， 在燃料喷射完成之后，火花塞执行火花点火。 在高发动机负载范围的高发动机转速运行范围内，燃料喷射阀将进气行程之间的燃料喷射到压缩行程的中间阶段，并且火花塞进行火花点火。 点火正时根据辛烷值变化，在低发动机转速范围内点火正时的变化宽度比高发动机转速范围短。

    Control device for compression self-ignition engine
    9.
    发明授权
    Control device for compression self-ignition engine 有权

    公开(公告)号：US11092108B2

    公开(公告)日：2021-08-17

    申请号：US17074330

    申请日：2020-10-19

    Applicant: Mazda Motor Corporation

    Inventor： Naoya Ito ,  Takashi Kaminaga ,  Kenji Uchida ,  Tatsuya Fujikawa ,  Takashi Youso ,  Masahisa Yamakawa ,  Mitsuhiro Muto ,  Takuma Fujii

    IPC: F02D41/40 ,  F02D35/02 ,  F02D41/30

    Abstract: A control device for a compression self-ignition engine includes a fuel injection system and an injection controller. While the engine is operated by CI combustion under a given first condition, a first injection is carried out in which fuel is injected at a first timing in a compression stroke and at which the fuel goes toward a part radially outward of a cavity formed in a crown surface of a piston, and a second injection is suspended. While the engine is operated by the CI combustion under a second condition in which a temperature inside a combustion chamber at a close timing of an intake valve becomes lower than the first condition, at least the second injection is carried out in which the fuel is injected at a second timing later than the first timing in the compression stroke and at which the fuel goes toward the cavity.

    Compression ignition gasoline engine
    10.
    发明授权
    Compression ignition gasoline engine 有权

    公开(公告)号：US11008969B2

    公开(公告)日：2021-05-18

    申请号：US16466008

    申请日：2016-12-01

    Applicant: Mazda Motor Corporation

    Inventor： Takashi Youso ,  Takashi Kaminaga ,  Masahisa Yamakawa

    IPC: F02M26/00 ,  F02D41/30 ,  F02M26/01 ,  F02D41/00 ,  F02M26/05

    Abstract: A compression ignition gasoline engine includes a fuel injection valve for injecting fuel containing gasoline as a main component into a cylinder; an EGR device operative to perform high-temperature EGR of introducing burnt gas generated in the cylinder into the cylinder at a high temperature; an octane number determination unit for determining whether fuel injected from the fuel injection valve has a prescribed octane number; and a combustion control unit for controlling the fuel injection valve and the EGR device in such a way that HCCI combustion occurs within the cylinder. The combustion control unit controls the EGR device, in at least a partial load operating range in which HCCI combustion is performed, in such a way that the EGR rate increases, as compared with a case where fuel is determined to have a prescribed octane number, when fuel is determined not to have a prescribed octane number.

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